Speed, I don't think most NFL QBs are on Stafford's level. I think he's THAT good.
Not Josh Allen (can't play in tight games when the pressure is on)
Not Lamar Jackson (also performs poorly in the playoffs)
Not Dak Prescott (no explanation needed)
Not Jalen Hurts (plays hero ball too often instead of taking easy completions)
Not Justin Herbert (wildly inconsistent)
I could keep going.
The only other QBs that I would want if I couldn't have Stafford would be Patrick Mahomes and Joe Burrow. Both of those QBs can play small ball when an opposing defense dictates it.
The others are frontrunners.
